Description from Flora of China
Homopteryx nakaiana Kitagawa, Bot. Mag. (Tokyo) 51: 809. 1937.
Plants 20–40 cm. Root brown, cylindric, ca. 1 cm thick. Stem green or purple-green branched, nodes hispidulous. Basal and lower petioles 4–6 cm, sheaths membranous-inflated; blade broad-ovate, 3–5 × 3–7 cm, 2–3-pinnate; leaflets sessile, oblong to broad-ovate, up to 2 × 1.2 cm, base cuneate, margin cuspidate-toothed, apex acuminate, white-pubescent adaxially, glabrous or sparse pubescent abaxially; proximal leaflets often 3-lobed. Umbels 3–7 cm across, enlarging to 10 cm in fruit; bracts absent or 1, linear-lanceolate, deciduous; rays 12–15, scabrous; bracteoles 6–10, linear, ca. 1 cm, much longer than pedicels, sparsely pubescent. Petals broad-obovate. Anthers dark purple. Fruit ovoid, 3.5–5 × 2.5–4 cm; vittae 1–3 in each furrow, 3–4 on commissure. Fl. Jul–Aug, fr. Aug–Sep.
Alpine meadows; above 2000 m. Jilin (Changbai Shan) [N Korea].